1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/* Parse command line arguments for bison.
Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
Bison is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Bison is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bison; see the file COPYING. If not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include <stdio.h>
#include "getopt.h"
#include "system.h"
#include "files.h"
#include "complain.h"
#include "getargs.h"
int debug_flag = 0;
int defines_flag = 0;
int locations_flag = 0;
int no_lines_flag = 0;
int no_parser_flag = 0;
int token_table_flag = 0;
int verbose_flag = 0;
int statistics_flag = 0;
int yacc_flag = 0; /* for -y */
int graph_flag = 0;
const char *skeleton = NULL;
extern char *program_name;
const char *shortopts = "yvgdhrltknVo:b:p:S:";
static struct option longopts[] =
{
/* Operation modes. */
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"yacc", no_argument, 0, 'y'},
{"fixed-output-files",no_argument, 0, 'y'},
/* Parser. */
{"skeleton", required_argument, 0, 'S'},
{"debug", no_argument, 0, 't'},
{"locations", no_argument, &locations_flag, 1},
/* was 'a'; apparently unused -wjh */
{"name-prefix", required_argument, 0, 'p'},
{"no-lines", no_argument, 0, 'l'},
{"no-parser", no_argument, 0, 'n'},
{"raw", no_argument, 0, 'r'},
{"token-table", no_argument, 0, 'k'},
/* Output. */
{"defines", optional_argument, 0, 'd'},
{"verbose", no_argument, 0, 'v'},
{"file-prefix", required_argument, 0, 'b'},
{"output", required_argument, 0, 'o'},
{"output-file", required_argument, 0, 'o'},
{"graph", optional_argument, 0, 'g'},
/* Hidden. */
{"statistics", no_argument, &statistics_flag, 1},
{0, 0, 0, 0}
};
/*---------------------------.
| Display the help message. |
`---------------------------*/
static void
usage (FILE *stream)
{
/* Some efforts were made to ease the translators' task, please
continue. */
fputs (_("\
GNU bison generates parsers for LALR(1) grammars.\n"), stream);
putc ('\n', stream);
fprintf (stream, _("\
Usage: %s [OPTION]... FILE\n"), program_name);
putc ('\n', stream);
fputs (_("\
If a long option shows an argument as mandatory, then it is mandatory\n\
for the equivalent short option also. Similarly for optional arguments.\n"),
stream);
putc ('\n', stream);
fputs (_("\
Operation modes:\n\
-h, --help display this help and exit\n\
-V, --version output version information and exit\n\
-y, --yacc emulate POSIX yacc\n"), stream);
putc ('\n', stream);
fputs (_("\
Parser:\n\
-S, --skeleton=FILE specify the skeleton to use\n\
-t, --debug instrument the parser for debugging\n\
--locations enable locations computation\n\
-p, --name-prefix=PREFIX prepend PREFIX to the external symbols\n\
-l, --no-lines don't generate `#line' directives\n\
-n, --no-parser generate the tables only\n\
-k, --token-table include a table of token names\n\
"), stream);
putc ('\n', stream);
fputs (_("\
Output:\n\
-d, --defines also produce a header file\n\
-v, --verbose also produce an explanation of the automaton\n\
-b, --file-prefix=PREFIX specify a PREFIX for output files\n\
-o, --output=FILE leave output to FILE\n\
-g, --graph also produce a VCG description of the automaton\n\
"), stream);
putc ('\n', stream);
fputs (_("\
Report bugs to <bug-bison@gnu.org>.\n"), stream);
}
/*------------------------------.
| Display the version message. |
`------------------------------*/
static void
version (FILE *stream)
{
/* Some efforts were made to ease the translators' task, please
continue. */
fprintf (stream, _("\
bison (GNU Bison) %s"), VERSION);
putc ('\n', stream);
putc ('\n', stream);
fputs (_("\
Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc.\n"),
stream);
fputs (_("\
This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
"),
stream);
}
/*----------------------.
| Process the options. |
`----------------------*/
void
getargs (int argc, char *argv[])
{
int c;
while ((c = getopt_long (argc, argv, shortopts, longopts, NULL)) != EOF)
switch (c)
{
case 0:
/* Certain long options cause getopt_long to return 0. */
break;
case 'y':
yacc_flag = 1;
break;
case 'h':
usage (stdout);
exit (0);
case 'V':
version (stdout);
exit (0);
case 'g':
/* Here, the -g and --graph=FILE options are differentiated. */
graph_flag = 1;
spec_graph_file = optarg;
break;
case 'v':
verbose_flag = 1;
break;
case 'S':
skeleton = optarg;
break;
case 'd':
/* Here, the -d and --defines options are differentiated. */
defines_flag = 1;
spec_defines_file = optarg;
break;
case 'l':
no_lines_flag = 1;
break;
case 'k':
token_table_flag = 1;
break;
case 'r':
fatal (_("`%s' is no longer supported"), "--raw");
break;
case 'n':
no_parser_flag = 1;
break;
case 't':
debug_flag = 1;
break;
case 'o':
spec_outfile = optarg;
break;
case 'b':
spec_file_prefix = optarg;
break;
case 'p':
spec_name_prefix = optarg;
break;
default:
fprintf (stderr, _("Try `%s --help' for more information.\n"),
program_name);
exit (1);
}
if (optind == argc)
{
fprintf (stderr, _("%s: no grammar file given\n"), program_name);
exit (1);
}
if (optind < argc - 1)
fprintf (stderr, _("%s: extra arguments ignored after `%s'\n"),
program_name, argv[optind]);
infile = argv[optind];
}
|
